Lamp



FIG. 1 is a top view of the lamp showing my new design;

FIG. 2 is a side elevational view of the lamp in FIG. 1;

FIG. 3 is a front elevational view of the lamp in FIG. 1;

FIG. 4 is a perspective view of the lamp in FIG. 1.

The ornamental design for a lamp, substantially as shown.